physics questions please help

choose the right answer 

(1) Maxwell introduced the displacement current as a correction to

(2) If an electromagnetic wave has components 
Ey=E0sin(kx−ωt) and 
Bz=B0sin(kx−ωt), in what direction is it traveling?

(3) A capacitor is charging in a simple RC circuit with a dc battery. Which one of the following statements about this capacitor is accurate?

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